<template>
    <div class="cmt-contrainer">

        <h3>发表评论</h3>
        <hr>

        <textarea placeholder="请输入要bb的内容" maxlength="120" v-model="msg"></textarea>
        <mt-button size="large" type="primary" @click="postComment">发表评论</mt-button>

        <div class="cmt-list">
            <div class="cmt-item" v-for="(item , i) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time|dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content==='undefined' ? '啥也没bb' :item.content}}
                </div>
            </div>
        </div>
        

        <mt-button size="large" type="danger" plain>加载更多</mt-button>
    </div>
</template>

<script>
import {Toast} from 'mint-ui'
export default {
    data(){
        return{
            pageIndex:1,//默认显示第一页数据
            comments:[],
            msg:''
        }
    },
    created(){
        this.getComments()
    },
    methods:{
        getComments(){
            this.$http.get("api/getcomments/"+this.id+"?pageindex="+this.pageIndex)
            .then(result =>{
                if(result.body.status===0){
                    this.comments=this.comments.concat(result.body.message)
                }else{
                    Toast('获取评论失败')
                }
            })
        },
        getMore(){
            this.pageIndex++,
            this.getComments()
        },
        postComment(){
            if(this.msg.trim().length===0){
                return Toast('评论不能为空')
            }
            this.$http.post("api/postcomment/"+this.$route.params.id,{content:this.msg.trim()})
            .then(result =>{
                if(result.body.status===0){
                    var cmt={
                        user_name:'尼玛用户',
                        add_time:Date.now(),
                        content:this.msg.trim()
                    }
                    this.comments.unshift(cmt)
                    this.msg=''
                }
            })
        }
    },
    props:['id']
}
</script>

<style lang="scss" scoped>
.cmt-contrainer{
    h3{
        font-size:18px
    }
    textarea{
        font-size: 14px;
        height: 85px;
        margin: 0;
    }
    .cmt-list{
        margin: 5px 0;
        .cmt-item{
            .cmt-title{
                font-size: 13px;
                background-color: #ccc;
                 line-height: 35px;
            }
            .cmt-body{
                text-indent: 2em;
                line-height: 35px;
            }
        }
    }
}
</style>